Switchgear type SF-3/D

Switchgear SF-3/D (with passive high current harmonic filtres and Danfoss frequency converter) is an electrical device designed for use in underground mining, with no explosion hazard present and on the ground, with no explosion hazard present. Switchgear SF-3/D (with passive high current harmonic filtres and frequency converter) is used for connecting and switching receiver to the mine 3-phase power grid with isolated star point of the transformer (IT system ) for 500V rated voltage The receiver is connected to the switchgear via a terminal by cable gland. Switchgear SF-3/D is equipped with a power protections against short-circuits, overloads, lowering of earth resistance and continuity of the earthing.